snapshot.debian.org

Time 2020-11-20 06:04:05

Web Name: snapshot.debian.org

WebSite: http://snapshot.debian.org

ID:121528

Keywords:

snapshot,debian,org,

Description:

The snapshot archive is a wayback machine that allows access to oldpackages based on dates and version numbers. It consists of allpast and current packages the Debian archive provides.The ability to install packages and view source code from any given date can bevery helpful to developers and users. It provides a valuable resource fortracking down when regressions were introduced, or for providing a specificenvironment that a particular application may require to run. The snapshotarchive is accessible like any normal apt repository, allowing it to be easilyused by all.The Debian Project would like to thank theWellcome Trust Sanger Institute andLeaseWeb Netherlands B.V. for providinghardware and hosting.We would also like to thank theElectrical and Computer Engineeringdepartment at the University of British Columbia, Canada andNordic Gaming for providinghardware/hosting and hardware, respectively, in the past.UsageIn order to browse snapshots of the archives kept on snapshot.debian.org, simplyfollow the links on the top left. They will lead you to a list of months forwhich data was imported, and the list entries in turn will point you to alltimestamps of a given month's snapshots.For example,/archive/debian/shows that we have imports for the main Debian archive,http://ftp.debian.org/debian/,from 2005 until the present.Picking October of 2009,/archive/debian/?year=2009;month=10,provides us with a list of many different states of the debian archive, roughly spaced 6 hours apart(the update frequency of ftp.debian.org at that time).Following any of these links, say/archive/debian/20091004T111800Z/,shows how ftp.debian.org/debian looked on the 4th of October 2009 at around 11:18 UTC.If you want to add a specific date's archive to your apt sources.list simplyadd an entry like these:deb https://snapshot.debian.org/archive/debian/20091004T111800Z/ lenny maindeb-src https://snapshot.debian.org/archive/debian/20091004T111800Z/ lenny maindeb https://snapshot.debian.org/archive/debian-security/20091004T121501Z/ lenny/updates maindeb-src https://snapshot.debian.org/archive/debian-security/20091004T121501Z/ lenny/updates mainTo access snapshots using https, you need to install the ca-certificatespackage; with apt version earlier than 1.5~alpha1 you also need to installthe apt-transport-https package.(Note that http:// also still works if you prefer.)To learn which snapshots exist, i.e. which date strings are valid, simplybrowse the list as mentioned above. Valid date formats areyyyymmddThhmmssZ or simply yyyymmdd. If thereis no import at the exact time you specified you will get the latestavailable timestamp which is before the time you specified.To access snapshots of suites using Valid-Until that are older than a dozen days,it is necessary to ignore the Valid-Until header within Release files, in orderto prevent apt from disregarding snapshot entries ("Release file expired"). Useaptitude -o Acquire::Check-Valid-Until=false update orapt-get -o Acquire::Check-Valid-Until=false update for this purpose.If you use at least apt version 1.1.exp9 (stretch and later), you can use this instead:deb [check-valid-until=no] https://snapshot.debian.org/archive/debian/20091004T111800Z/ lenny maindeb-src [check-valid-until=no] https://snapshot.debian.org/archive/debian/20091004T111800Z/ lenny maindeb [check-valid-until=no] https://snapshot.debian.org/archive/debian-security/20091004T121501Z/ lenny/updates maindeb-src [check-valid-until=no] https://snapshot.debian.org/archive/debian-security/20091004T121501Z/ lenny/updates mainIf you want anything related to a specific package simply enter thesource package name in the form, or find it in the package index. News2019-09-29Earlier this month, the binary packagenode-debbundle-acorn_6.2.1+ds+~0.4.0+~4.0.0+really4.0.0+~1.0.0+~5.0.1+ds+~1.7.0+ds+~0.1.1+~0.3.1+~0.2.0+~0.1.0+~0.3.0+~0.3.0-2_all.debwas uploaded to the archive, breaking imports into snapshot due to the longfilename. The issue wasfixeda few days later by changing the data type in the database, but imports between September 4 and September8 unfortunately failed and these snapshots are lost.Furthermore, the mirror of thedebian-debug archive thatsnapshot.debian.org imports from failed to correctly update starting in June.A symlink had been replaced with a directory causing rsync to fail the mirrorrun. Since rsync failed, the mirroring script did then not trigger the snapshotimporter. The issue was reported on the mailinglist and fixed the same day.Currently, snapshot consists of close to 90TB of data in about 35 million filesand storage capacity is becoming an issue again.2018-02-13Snapshot keeps growing. We are now at approximate 60TB of files. Thismade it necessary to break up the RAID-1 mirror across two externalstorage arrays which Sangeris kindly providing, and it also meant we needed more machines (now six) at ourmirrorsite, which LeaseWeb is generouslydonating. Thanks!2017-09-21Imports of the debian-ports and debian-debug suite had failed for the lastthree weeks as individual files in those archives have exceeded the sizerepresentable in our database schema. We have now updated the database tosupport file sizes up to 9,223,372,036,854,775,807 Bytes (263-1; 8EiB). Just like 640KB in ancient times, this will be truly sufficientindefinitely.2014-06-01We added a cluster of machines generously provided by LeaseWeb to provide the snapshot.debian.orgservice.Snapshot used to run on two machines hosted at and provided by the Wellcome Trust Sanger Institute and by theElectrical and Computer Engineeringdepartment at the University of British Columbia, Canada. A few months ago,the machine at UBC, named stabile.debian.org, started to die.Since it was approaching its storage capacity limits anyway, we began lookingfor a new second home for snapshot, and LeaseWeb offered! Providing snapshotfrom two different places (now Sanger and LeaseWeb) allows us to survivetemporary and not-so-temporary issues that affect any single site.Currently, snapshot consists of 24 terabytes of data in about 15 million files,and it appears to be growing at a rate of approximately 5 terabytes a year (orabout 10 megabytes per minute).2012-09-23Just a quick datapoint: Currently snapshot has about 11 million files in a bitover 16 terabytes of data.2010-12-14Around 2010-11-20 the server which hosted snapshot-master stumbled intohardware issues. This did not affect the external storage but only the front-endserver. Since the master was down no new data was imported into the snapshotsystem and the remaining mirror kept presenting its data as of the 20th.Fortunately the people at the Wellcome TrustSanger Institute, which hosts snapshot-master, have been able to give usa replacement machine quite quickly. Thanks!While the master was down, snapshot information was collected by a non-publicbackup system. This data has been integrated into snapshot.debian.org.Unfortunately, one of the package pools, debian-ports, was notarchived on that secondary system, and for this archive we have no datain the affected time period.2010-09-07Renamed the backports.org archive to debian-backports as it has nowmovedto debian.org infrastructure. A rewrite rule has been put in placeso old URLs should continue to work (at least for HTTP clients that knowhow to follow HTTP redirects).2010-08-16Set up a caching proxy in front of the two snapshot webservers. This will helpin cases where an entire organisation uses various apt sources.list entries ona lot of their machines.Usually such entities would use proxy caches like squid and then there is noproblem, assuming the cache works correctly. Unfortunately apt-cacher, apparentlya common choice which is supposed to be smarter for debian archives, completely ignores theCache-Control headers that snapshot sends and hits this service for allrequests made to anything under dist/. A single apt-getupdate can cause up to a few dozen of such requests and when multipliedby scores of machines - all running the update at the same time - this causedthe snapshot backend to run into limits. Now such requests won't hit the backendany more.2010-04-12Publicly announce the snapshot.debian.org service. Yay. Application Developed by Peter Palfrader Web/Graphics designed by Bernhard Weitzhofer Source code can be cloned with git clone https://salsa.debian.org/snapshot-team/snapshot.git or browsed directly on salsa.debian.org. Please report bugs against the snapshot.debian.org package. Built at 2020-11-19 22:03:36.025738 on sallinen Hosting for snapshot.debian.org generously provided by our partners.

TAGS:snapshot debian org 

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